Hillsborough Weather in September
During September, Hillsborough experiences high daytime temperatures of 30°C (86°F) and cooler nights around 27°C (81°F). Expect quite a bit of rainfall. Around 155 mm (6.1 in) is typical.
Rainfall in Hillsborough in September
Analyzing past climate data, one can expect approximately 18 days of rain, averaging 155 mm (6.1 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Hillsborough in September
Expect highs of 30°C (86°F) in Hillsborough in September, with nights dropping to around 27°C (81°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 27°C (81°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.
Sunshine in Hillsborough in September
The days are predominantly sunny, with an estimated total of around 240 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Hillsborough. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Grenada, check out our Hillsborough's climate page.
Hillsborough Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
61%
Precipitation
155 mm (6.1 in)
Rainy days
18 days
Sunshine
240 hours *
Percentage Sunshine
*
Daily Historical Temperatures
43-year average (1979-2025)
Based on our historical records, temperatures in Hillsborough typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather for Hillsborough in September
Browse day-by-day weather records for Hillsborough spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hillsborough historical weather extremes in September
Our historical data for Hillsborough spans 2004 to 2025, revealing these weather extremes.
- The warmest day in September was on September 15, 2020, with a maximum of 34°C (93°F).
- On September 9, 2010, Hillsborough saw its coldest September day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 22°C (72°F) on September 3, 2021, marking the coldest September night on record.
Best Places in Grenada in September
Find out more about the weather in Grenada and which places have the best travel conditions in this month. See all of Grenada in September →
perfect weather
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What to Wear in Hillsborough in September
Warm but pleasant conditions in Hillsborough in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Hillsborough in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Grenada, check out our Hillsborough's climate page.
See the full Hillsborough climate overview or explore weather in Grenada.
